#include <bits/stdc++.h>

using namespace std;
#define int long long
const int inf = 0x3f3f3f3f3f3f3f3f;

void solve()
{
    int n;
    cin >> n;
    vector<int> a(n);
    for (int i = 0; i < n; i++) cin >> a[i];
    for (int i = 0; i < n; i++)
    {
        for (int j = i + 1; j < n; j++)
        {
            int x = a[i] | a[j];
            auto it = find(a.begin(), a.end(), x);
            if (it == a.end())
            {
                cout << "NO" << endl;
                return;
            }
        }
    }
    cout << "YES" << endl;
}

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int _ = 1;
    //cin >> _;
    while (_--)
    {
        solve();
    }
    return 0;
}